GNU bug report logs - #20129
23.3; ediff can't ignore whitespace regarding tabs vs spaces

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Geof Sawaya <fredericflintstone <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 23.3; ediff can't ignore whitespace regarding tabs vs spaces
Date: Tue, 17 Mar 2015 14:21:19 -0600

[Message part 1 (text/plain, inline)]

From: sawaya <sawaya <at> fractus.cs.utah.edu>
To: bug-gnu-emacs <at> gnu.org
Subject: 23.3; ediff can't ignore whitespace regarding tabs vs spaces
Date: Tue, 17 Mar 2015 14:20:58 -0600
Message-ID: <874mpjided.fsf <at> fractus.cs.utah.edu>
--text follows this line--
I was working on a major merge (of two versions of a file) using ediff (the
file that was giving me
trouble was about 10k lines long).  I was getting HUGE diference regions
and also it was strange that I had varying regions between the files
where I didn't discern any difference in the text.  This was after
enabling  (with ##) the option to ignore differences in whitespace.

After I reset the tabs in both files (by reindenting the entire files
with emacs), things went much better and I was able to get through the
merge process.

I can provide you with copies of the files -- they do happen to be open
source.  Just let me know -- fredericflintstone <at> gmail.com


In GNU Emacs 23.3.1 (x86_64-pc-linux-gnu, GTK+ Version 2.24.10)
 of 2013-05-16 on panlong, modified by Debian
Windowing system distributor `The X.Org Foundation', version 11.0.11600000
configured using `configure  '--build' 'x86_64-linux-gnu' '--build'
'x86_64-linux-gnu' '--prefix=/usr' '--sharedstatedir=/var/lib'
'--libexecdir=/usr/lib' '--localstatedir=/var/lib'
'--infodir=/usr/share/info' '--mandir=/usr/share/man' '--with-pop=yes'
'--enable-locallisppath=/etc/emacs23:/etc/emacs:/usr/local/share/emacs/23.3/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/23.3/site-lisp:/usr/share/emacs/site-lisp:/usr/share/emacs/23.3/leim'
'--with-crt-dir=/usr/lib/x86_64-linux-gnu' '--with-x=yes'
'--with-x-toolkit=gtk' '--with-toolkit-scroll-bars'
'build_alias=x86_64-linux-gnu' 'CFLAGS=-DDEBIAN -g -O2' 'LDFLAGS=-g'
'CPPFLAGS=-D_FORTIFY_SOURCE=2''

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: en_US.UTF-8
  value of $XMODIFIERS: nil
  locale-coding-system: utf-8-unix
  default enable-multibyte-characters: t

Major mode: Fundamental

Minor modes in effect:
  tooltip-mode: t
  mouse-wheel-mode: t
  tool-bar-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  blink-cursor-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
<help-echo> <down-mouse-1> <mouse-movement> <mouse-movement>
<mouse-1> M-x e m a c s SPC - r e <tab> <backspace>
<backspace> <backspace> <tab> r e <tab> <backspace>
<backspace> <backspace> <backspace> <backspace> <backspace>
<backspace> <backspace> r e p o r t <tab> <return>

Recent messages:
Loading /etc/emacs/site-start.d/50dictionaries-common.el (source)...done
Loading /etc/emacs/site-start.d/50erlang-mode.el (source)...done
Loading /etc/emacs/site-start.d/50ocaml-mode.el (source)...done
Loading /etc/emacs/site-start.d/50psvn.el (source)...done
Loading /etc/emacs/site-start.d/50scala-mode-el.el (source)...
Loading scala-mode-auto...done
Loading /etc/emacs/site-start.d/50scala-mode-el.el (source)...done
Loading /etc/emacs/site-start.d/51tuareg-mode.el (source)...done
For information about GNU Emacs and the GNU system, type C-h C-a.
Making completion list...

Load-path shadows:
/usr/share/emacs/23.3/site-lisp/auctex/font-latex hides
/usr/share/emacs/site-lisp/auctex/font-latex
/usr/share/emacs/23.3/site-lisp/auctex/tex-buf hides
/usr/share/emacs/site-lisp/auctex/tex-buf
/usr/share/emacs/23.3/site-lisp/auctex/multi-prompt hides
/usr/share/emacs/site-lisp/auctex/multi-prompt
/usr/share/emacs/23.3/site-lisp/auctex/tex-mik hides
/usr/share/emacs/site-lisp/auctex/tex-mik
/usr/share/emacs/23.3/site-lisp/auctex/tex-info hides
/usr/share/emacs/site-lisp/auctex/tex-info
/usr/share/emacs/23.3/site-lisp/auctex/context hides
/usr/share/emacs/site-lisp/auctex/context
/usr/share/emacs/23.3/site-lisp/auctex/tex hides
/usr/share/emacs/site-lisp/auctex/tex
/usr/share/emacs/23.3/site-lisp/auctex/tex-jp hides
/usr/share/emacs/site-lisp/auctex/tex-jp
/usr/share/emacs/23.3/site-lisp/auctex/tex-style hides
/usr/share/emacs/site-lisp/auctex/tex-style
/usr/share/emacs/23.3/site-lisp/auctex/toolbar-x hides
/usr/share/emacs/site-lisp/auctex/toolbar-x
/usr/share/emacs/23.3/site-lisp/auctex/context-nl hides
/usr/share/emacs/site-lisp/auctex/context-nl
/usr/share/emacs/23.3/site-lisp/auctex/tex-fold hides
/usr/share/emacs/site-lisp/auctex/tex-fold
/usr/share/emacs/23.3/site-lisp/auctex/bib-cite hides
/usr/share/emacs/site-lisp/auctex/bib-cite
/usr/share/emacs/23.3/site-lisp/auctex/texmathp hides
/usr/share/emacs/site-lisp/auctex/texmathp
/usr/share/emacs/23.3/site-lisp/auctex/tex-font hides
/usr/share/emacs/site-lisp/auctex/tex-font
/usr/share/emacs/23.3/site-lisp/auctex/tex-fptex hides
/usr/share/emacs/site-lisp/auctex/tex-fptex
/usr/share/emacs/23.3/site-lisp/auctex/tex-bar hides
/usr/share/emacs/site-lisp/auctex/tex-bar
/usr/share/emacs/23.3/site-lisp/auctex/latex hides
/usr/share/emacs/site-lisp/auctex/latex
/usr/share/emacs/23.3/site-lisp/auctex/context-en hides
/usr/share/emacs/site-lisp/auctex/context-en
/usr/share/emacs/23.3/site-lisp/debian-startup hides
/usr/share/emacs/site-lisp/debian-startup
/usr/share/emacs/23.3/site-lisp/cmake-data/cmake-mode hides
/usr/share/emacs/site-lisp/cmake-mode
/usr/share/emacs23/site-lisp/dictionaries-common/ispell hides
/usr/share/emacs/23.3/lisp/textmodes/ispell
/usr/share/emacs23/site-lisp/dictionaries-common/flyspell hides
/usr/share/emacs/23.3/lisp/textmodes/flyspell

Features:
(shadow sort mail-extr message sendmail regexp-opt ecomplete rfc822 mml
mml-sec password-cache mm-decode mm-bodies mm-encode mailcap mail-parse
rfc2231 rfc2047 rfc2045 qp ietf-drums mailabbrev nnheader gnus-util
netrc time-date mm-util mail-prsvr gmm-utils wid-edit mailheader canlock
sha1 hex-util hashcash mail-utils emacsbug help-mode easymenu view
warnings scala-mode-auto erlang-start preview-latex tex-site auto-loads
tooltip ediff-hook vc-hooks lisp-float-type mwheel x-win x-dnd
font-setting tool-bar dnd fontset image fringe lisp-mode register page
menu-bar rfn-eshadow timer select scroll-bar mldrag mouse jit-lock
font-lock syntax facemenu font-core frame cham georgian utf-8-lang
misc-lang vietnamese tibetan thai tai-viet lao korean japanese hebrew
greek romanian slovak czech european ethiopic indian cyrillic chinese
case-table epa-hook jka-cmpr-hook help simple abbrev loaddefs button
minibuffer faces cus-face files text-properties overlay md5 base64
format env code-pages mule custom widget hashtable-print-readable
backquote make-network-process dbusbind system-font-setting
font-render-setting gtk x-toolkit x multi-tty emacs)

[Message part 2 (text/html, inline)]

Message #8 received at 20129 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Geof Sawaya <fredericflintstone <at> gmail.com>
Cc: 20129 <at> debbugs.gnu.org
Subject: Re: bug#20129: 23.3; ediff can't ignore whitespace regarding tabs
 vs spaces
Date: Thu, 03 Dec 2020 12:39:28 +0100

Geof Sawaya <fredericflintstone <at> gmail.com> writes:

> I was working on a major merge (of two versions of a file) using ediff (the file that
> was giving me
> trouble was about 10k lines long).  I was getting HUGE diference regions
> and also it was strange that I had varying regions between the files
> where I didn't discern any difference in the text.  This was after
> enabling  (with ##) the option to ignore differences in whitespace.

(This bug report unfortunately got no response at the time.)

Is this problem still present in more recent Emacs versions?  If so,
could you provide a recipe to reproduce the bug, starting from "emacs -Q"?

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

Message #13 received at 20129 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Geof Sawaya <fredericflintstone <at> gmail.com>
Cc: 20129 <at> debbugs.gnu.org
Subject: Re: bug#20129: 23.3; ediff can't ignore whitespace regarding tabs
 vs spaces
Date: Tue, 19 Jan 2021 18:54:26 +0100

Lars Ingebrigtsen <larsi <at> gnus.org> writes:

> Is this problem still present in more recent Emacs versions?  If so,
> could you provide a recipe to reproduce the bug, starting from "emacs -Q"?

More information was requested, but no response was given within a
month, so I'm closing this bug report.  If the problem still exists,
please respond to this email and we'll reopen the bug report.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

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